气候变化领域集成服务门户(CCPortal): QTL mapping and epistatic interaction analysis in asparagus bean for several characterized and novel horticulturally important traits

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DOI	10.1186/1471-2156-14-4
	QTL mapping and epistatic interaction analysis in asparagus bean for several characterized and novel horticulturally important traits
	Xu, Pei; Wu, Xiaohua; Wang, Baogen; Hu, Tingting; Lu, Zhongfu; Liu, Yonghua; Qin, Dehui; Wang, Sha; Li, Guojing
发表日期	2013
ISSN	1471-2156
卷号	14
英文摘要	Background: Asparagus bean (Vigna. unguiculata. ssp sesquipedalis) is a subspecies and special vegetable type of cowpea (Vigna. unguiculata L. Walp.) important in Asia. Genetic basis of horticulturally important traits of asparagus bean is still poorly understood, hindering the utilization of targeted, DNA marker-assisted breeding in this crop. Here we report the identification of quantitative trait loci (QTLs) and epistatic interactions for four horticultural traits, namely, days to first flowering (FLD), nodes to first flower (NFF), leaf senescence (LS) and pod number per plant (PN) using a recombinant inbred line (RIL) population of asparagus bean. Results: A similar genetic mode of one major QTL plus a few minor QTLs was found to dominate each of the four traits, with the number of QTLs for individual traits ranging from three to four. These QTLs were distributed on 7 of the 11 chromosomes. Major QTLs for FLD, NFF and LS were co-localized on LG 11, indicative of tight linkage. Genome wide epistasis analysis detected two and one interactive locus pairs that significantly affect FLD and LS, respectively, and the epistatic QTLs for FLD appeared to work in different ways. Synteny based comparison of QTL locations revealed conservation of chromosome regions controlling these traits in related legume crops. Conclusion: Major, minor, and epistatic QTLs were found to contribute to the inheritance of the FLD, NFF, LS, and PN. Positions of many of these QTLs are conserved among closely related legume species, indicating common mechanisms they share. To our best knowledge, this is the first QTL mapping report using an asparagus bean x asparagus bean intervarietal population and provides marker-trait associations for marker-assisted approaches to selection.
英文关键词	Asparagus bean; Cowpea; Epistasis; Flowering time; Leaf senescence; Node to first flower; Pod number; QTL; RIL
WOS研究方向	Genetics & Heredity
WOS类目	Genetics & Heredity
来源期刊	BMC GENETICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158616
作者单位	Li, GJ (corresponding author), Zhejiang Acad Agr Sci, Inst Vegetables, Hangzhou 310021, Zhejiang, Peoples R China.
推荐引用方式 GB/T 7714	Xu, Pei,Wu, Xiaohua,Wang, Baogen,et al. QTL mapping and epistatic interaction analysis in asparagus bean for several characterized and novel horticulturally important traits[J],2013,14.
APA	Xu, Pei.,Wu, Xiaohua.,Wang, Baogen.,Hu, Tingting.,Lu, Zhongfu.,...&Li, Guojing.(2013).QTL mapping and epistatic interaction analysis in asparagus bean for several characterized and novel horticulturally important traits.BMC GENETICS,14.
MLA	Xu, Pei,et al."QTL mapping and epistatic interaction analysis in asparagus bean for several characterized and novel horticulturally important traits".BMC GENETICS 14(2013).